Connect public, paid and private patent data with Google Patents Public Datasets

Filtering device or separator for filter type respirators or the like

Download PDF

Info

Publication number
US2062834A
US2062834A US3008135A US2062834A US 2062834 A US2062834 A US 2062834A US 3008135 A US3008135 A US 3008135A US 2062834 A US2062834 A US 2062834A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
filter
elements
device
air
filtering
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Schwartz Nathan
Original Assignee
Schwartz Nathan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00Filters for breathing-protection purposes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00Gas separation
    • Y10S55/35Respirators and register filters

Description

Dec. 1, 1936. HWARTZ I 2,062,834

FILTERING DEVICE OR SEPARATOR FOR FILTER TYPE RESPIRATORS OR THE LIKE Filed July 6, 1955 INVENT OR. MIT/IA/YJMW/Wrz KMW 4 ATTORNEYS Patented Dec. 1, 1936 UNITED STATES PATENT OFFICE FILTERING DEVICE OR SEPARATOR FOR FILTER TYPE RESPIRATORS OR THE LIKE 1 Claim.

This invention relates to filtering devices or separators for filter type respirators, gas masks or the like and comprehends an improved device of this character which is so constructed and arranged as to provide a relatively large filtration area for a device of a relatively small size and weight.

More particularly the invention resides in an improved filtering device or separator in which an air chamber is defined between a pair of opposed filter elements and with means which surrounds and spaces said elements apart, which means is formed with an outlet adapted for connection with the interior of the respirator through which the filtered air is drawn from the chamber into the face piece of the respirator thereby making for a structure which, while effectually filtering the air, offers a minimum resistance to breathing.

A further advantage of the present invention is the provision of means for supporting the opposed filter elements which permits of their ready removal and replacement when it is necessary or desirable to change the same.

Other objects in View are to provide a filtering device or separator which employs but few and simple parts, thereby rendering the same economical to produce, without in any way sacrificing the efficiency or safety thereof.

With these objects and others in view, the invention is hereafter specifically described in the following specification, illustrated in the accompanying drawing and pointed out in the appended claim.

In the drawing:

Fig. 1 is a. side view of a filtering device or separator for respirators with parts broken away and shown in section to disclose the underlying structure.

Fig. 2 is a sectional view therethrough taken approximately on the line 2-2 of Fig. 1.

Referring to the drawing by characters of reference, Hl designates an annular wall defining an open ended tubular body which, while shown in the present disclosure, as circular, may within the scope of the invention, be of any other desired configuration wherein the wall is continuous. In practice, the wall or body It] is preferably constructed of semi-flexible elastic material such as molded rubber with the inner periphery thereof formed intermediate the ends with a continuous or annular boss II, the side edges l2 of which are spaced from inwardly directed annular flanges l3 which protrude inwardly beyond the inner surface of the boss H and which flanges, together with the wall Ill, and the side edges l2 of the boss, form a pair of spaced internal grooves l4. Intermediate the grooves, the body is provided with an air outlet I 5 which is adapted to communicate with the interior of a respirator.

Filter elements of similar construction are fitted within the grooves l4 whereby they are dis- 5 posed in spaced relation lying on opposite sides of the outlet l5 to define within the wall or body l0, between said filter elements, an air chamber into which air is drawn through the opposed filter elements and from which the air is withdrawn 10 through the outlet l5 into the face piece or interior of a respirator to which the device is attached. The filter elements may be of any desired type or form which operate to separate from the air drawn therethrough dust, fumes, gases 15 or other harmful substances. As shown, however, the filter elements each includes a perforated or foraminous disc E6 of a relatively rigid material to which is permanently or releasably secured over one or both surfaces thereof, a filter- 20 ing material I! such as felt or the like. The filtering element is preferably made of slightly larger diameter or size than the grooved portions M of the body or wall it so that in emplacing the same the elastic body is slightly. expanded and 25 reacts to contract itself in surrounding relation, to the filter element to insure the retention of the same in place against accidental or unintentional displacement and to seal the perforations of the filter elements against leakage. 30

By providing spaced opposed filter elements, a substantial reduction in the resistance to breathing is obtained, while an increased filtration area is provided in a single filtering device or separator. Furthermore, due to the construction 35 of the body or wall [0 the emplacement or removal of the filtering elements is greatly facilitated and a single device of comparatively light weight will be found sufficient for each respirator in lieu of employing a plurality of devices as has 40 heretofore been the practice.

What is claimed is:

A separator for filter type respirators including an annular elastic wall having inwardly directed annular flanges at its opposite ends and an 45 intermediate boss defining a pair of spaced internal grooveswith an air outlet between said grooves adapted for communication with the interior .of a respirator and a filter element arranged in each groove, located respectively be- 50 tween the opposite sides of the boss and said flanges and removably retained in place by the grooved portions and the flanges to define within said wall between said filter elements an air chamber from which filtered air is drawn through 55 the outlet into the respirator.

NATHAN SCHWARTZ.

US2062834A 1935-07-06 1935-07-06 Filtering device or separator for filter type respirators or the like Expired - Lifetime US2062834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US2062834A US2062834A (en) 1935-07-06 1935-07-06 Filtering device or separator for filter type respirators or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2062834A US2062834A (en) 1935-07-06 1935-07-06 Filtering device or separator for filter type respirators or the like

Publications (1)

Publication Number Publication Date
US2062834A true US2062834A (en) 1936-12-01

Family

ID=21852394

Family Applications (1)

Application Number Title Priority Date Filing Date
US2062834A Expired - Lifetime US2062834A (en) 1935-07-06 1935-07-06 Filtering device or separator for filter type respirators or the like

Country Status (1)

Country Link
US (1) US2062834A (en)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2521984A (en) * 1947-05-19 1950-09-12 American Felt Co Fibrous unit
US2577607A (en) * 1950-02-16 1951-12-04 American Optical Corp Air supply system for welders' helmets
US2627937A (en) * 1950-08-24 1953-02-10 Royal Vacuum Cleaner Company Suction cleaner motor filter construction
US2682315A (en) * 1951-06-05 1954-06-29 Mine Safety Appliances Co Gas filter
US2722998A (en) * 1952-03-29 1955-11-08 Albert L Chaney Filter apparatus
US2867288A (en) * 1955-07-01 1959-01-06 Koppers Co Inc Dust filter and collector
US2896617A (en) * 1955-11-03 1959-07-28 Wesley A Gibbons Air supplied hood structure
US3142549A (en) * 1961-10-31 1964-07-28 Electric Storage Battery Co Respirator and a disposable pre-filter
US4826519A (en) * 1985-08-28 1989-05-02 Kurashiki Boseki Kabushiki Kaisha Multilayer filter element
WO2002000300A3 (en) * 2000-06-28 2002-06-13 Vase Technology Filter cartridge platform and filter cartridge for use on the platform
US6761169B2 (en) 2000-08-17 2004-07-13 Vase Technology Bi/multi-directional filter cartridge and filter platform for mounting the cartridge thereon
USD741475S1 (en) 2015-02-27 2015-10-20 3M Innovation Properties Company Respirator mask having a communication grille
USD742504S1 (en) 2015-02-27 2015-11-03 3M Innovative Properties Company Respirator mask
USD743536S1 (en) 2015-02-27 2015-11-17 3M Innovative Properties Company Respirator mask having a circular button
USD744088S1 (en) 2014-05-22 2015-11-24 3M Innovative Properties Company Respirator mask having a circular button
USD745962S1 (en) 2014-05-22 2015-12-22 3M Innovative Properties Company Respirator filter retainer
USD746437S1 (en) 2014-05-22 2015-12-29 3M Innovative Properties Company Respirator mask having a communication grille
USD746438S1 (en) 2014-05-22 2015-12-29 3M Innovative Properties Company Respirator filter cover
USD747795S1 (en) 2015-02-27 2016-01-19 3M Innovative Properties Company Respirator mask body
USD754844S1 (en) 2014-05-22 2016-04-26 3M Innovative Properties Company Respirator mask
USD757247S1 (en) 2014-05-22 2016-05-24 3M Innovative Properties Company Respirator cartridge
USD757928S1 (en) 2014-05-22 2016-05-31 3M Innovative Properties Company Respirator cartridge body
USD759807S1 (en) 2014-05-22 2016-06-21 3M Innovative Properties Company Respirator mask exhalation port
US9393448B2 (en) 2011-11-17 2016-07-19 3M Innovative Properties Company Side plug-in filter cartridge
USD762845S1 (en) 2015-02-27 2016-08-02 3M Innovative Properties Company Respirator cartridge
USD763437S1 (en) 2015-02-27 2016-08-09 3M Innovative Properties Company Respirator cartridge body
USD767116S1 (en) 2015-02-27 2016-09-20 3M Innovative Properties Company Respirator mask having an exhalation port
US9510626B2 (en) 2013-02-01 2016-12-06 3M Innovative Properties Company Sleeve-fit respirator cartridge
USD787660S1 (en) 2014-05-22 2017-05-23 3M Innovative Properties Company Respirator mask having a face seal flexing region
USD795416S1 (en) 2015-02-27 2017-08-22 3M Innovative Properties Company Respirator mask
USD795415S1 (en) 2015-02-27 2017-08-22 3M Innovative Properties Company Respirator cartridge having an engagement latch
US9814913B2 (en) 2013-11-15 2017-11-14 3M Innovative Properties Company Respirator with floating elastomeric sleeve

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2521984A (en) * 1947-05-19 1950-09-12 American Felt Co Fibrous unit
US2577607A (en) * 1950-02-16 1951-12-04 American Optical Corp Air supply system for welders' helmets
US2627937A (en) * 1950-08-24 1953-02-10 Royal Vacuum Cleaner Company Suction cleaner motor filter construction
US2682315A (en) * 1951-06-05 1954-06-29 Mine Safety Appliances Co Gas filter
US2722998A (en) * 1952-03-29 1955-11-08 Albert L Chaney Filter apparatus
US2867288A (en) * 1955-07-01 1959-01-06 Koppers Co Inc Dust filter and collector
US2896617A (en) * 1955-11-03 1959-07-28 Wesley A Gibbons Air supplied hood structure
US3142549A (en) * 1961-10-31 1964-07-28 Electric Storage Battery Co Respirator and a disposable pre-filter
US4826519A (en) * 1985-08-28 1989-05-02 Kurashiki Boseki Kabushiki Kaisha Multilayer filter element
WO2002000300A3 (en) * 2000-06-28 2002-06-13 Vase Technology Filter cartridge platform and filter cartridge for use on the platform
US6793702B2 (en) * 2000-06-28 2004-09-21 Muniyapla Eswarappa Filter cartridge platform and filter cartridge for use on the platform
US6761169B2 (en) 2000-08-17 2004-07-13 Vase Technology Bi/multi-directional filter cartridge and filter platform for mounting the cartridge thereon
US9393448B2 (en) 2011-11-17 2016-07-19 3M Innovative Properties Company Side plug-in filter cartridge
US9510626B2 (en) 2013-02-01 2016-12-06 3M Innovative Properties Company Sleeve-fit respirator cartridge
US9814913B2 (en) 2013-11-15 2017-11-14 3M Innovative Properties Company Respirator with floating elastomeric sleeve
USD759807S1 (en) 2014-05-22 2016-06-21 3M Innovative Properties Company Respirator mask exhalation port
USD787660S1 (en) 2014-05-22 2017-05-23 3M Innovative Properties Company Respirator mask having a face seal flexing region
USD746437S1 (en) 2014-05-22 2015-12-29 3M Innovative Properties Company Respirator mask having a communication grille
USD746438S1 (en) 2014-05-22 2015-12-29 3M Innovative Properties Company Respirator filter cover
USD744088S1 (en) 2014-05-22 2015-11-24 3M Innovative Properties Company Respirator mask having a circular button
USD754844S1 (en) 2014-05-22 2016-04-26 3M Innovative Properties Company Respirator mask
USD757247S1 (en) 2014-05-22 2016-05-24 3M Innovative Properties Company Respirator cartridge
USD757928S1 (en) 2014-05-22 2016-05-31 3M Innovative Properties Company Respirator cartridge body
USD745962S1 (en) 2014-05-22 2015-12-22 3M Innovative Properties Company Respirator filter retainer
USD747795S1 (en) 2015-02-27 2016-01-19 3M Innovative Properties Company Respirator mask body
USD762845S1 (en) 2015-02-27 2016-08-02 3M Innovative Properties Company Respirator cartridge
USD763437S1 (en) 2015-02-27 2016-08-09 3M Innovative Properties Company Respirator cartridge body
USD767116S1 (en) 2015-02-27 2016-09-20 3M Innovative Properties Company Respirator mask having an exhalation port
USD741475S1 (en) 2015-02-27 2015-10-20 3M Innovation Properties Company Respirator mask having a communication grille
USD743536S1 (en) 2015-02-27 2015-11-17 3M Innovative Properties Company Respirator mask having a circular button
USD795416S1 (en) 2015-02-27 2017-08-22 3M Innovative Properties Company Respirator mask
USD795415S1 (en) 2015-02-27 2017-08-22 3M Innovative Properties Company Respirator cartridge having an engagement latch
USD742504S1 (en) 2015-02-27 2015-11-03 3M Innovative Properties Company Respirator mask

Similar Documents

Publication Publication Date Title
US3508383A (en) Air filter
US3572013A (en) Fuel vapor emission control
US3290870A (en) Disposable air filter for internal combustion engines
US3266628A (en) Flexible impervious cartridge filter
US3520417A (en) Pleated paper filter and method of making same
US3448862A (en) Filter media having an increased filter area
US3490211A (en) High efficiency particulate air filter
US3616618A (en) Air filter gasket element
US3406501A (en) Automobile engine exhaust filter
US3002870A (en) Liquid filters
US3342021A (en) Filter
US3420377A (en) Dual,pleated element filter assembly
US3406831A (en) Filter cartridge for filtering liquids
US3296781A (en) Filter
US3595399A (en) Filter
USRE35062E (en) Filter element
US4559138A (en) End connected filter cartridges
US3807561A (en) Automatic valves,particularly for use with filters
US3681899A (en) Separable filter housing and cartridge for a fluid flow line
US2387368A (en) Filter for liquids or gases
US2242278A (en) Suction cleaner
US4548626A (en) Particulate air filter assembly
US2744523A (en) Fume and mist respirator with ring means for removably mounting the filters
US4865637A (en) Filter cartridge
US4256474A (en) Filter housing and filter assemblies utilizing the same